Research Information System
20. Ulusal Anatomi Kongresi, İstanbul, Turkey, 27 - 31 August 2019, vol.13, no.2, pp.198
Objective: Hyperosteosis frontalis interna (HFI) is a pathology first described by Morgagni, characterized by thickening of the facies interna of the Os frontale. It is mostly seen in postmenopausal women. Although it has been associated with many clinical conditions. It’s etiology has not yet been established.
Methods: In the education dissection of 10% formalin-fixed cadavers in Ege University Anatomy Department, HFI was found by removal of calvaria. Detected in Os frontale and bone and soft tissue were examined.
Results: In a male cadaver, thickening was observed towards the endocranium, starting from the sinus frontalis and covering 50% of the os frontale. It was close to 3 cm. Our case was found to be in accordance with Type D HFI in the classification which was put forward by Hershkovitz in 2011. In addition, narrowing of the sinuses was remarkable as a result of significant thickening of the inner wall of the two sinus frontalis. Soft tissue showed thinning of the falx cerebri. Cross section was taken from the compression region. Cortical cell change investigated. There were depressions in the area. The anterior part of the Falx cerebri was visible from the outside.
Conclusion: HFI, which is often attributed to postmenopausal hormonal causes, is also rare in male patients. In our case, it was suggested that chronic sinusitis may be the etiology of narrowing of sinus frontalis. Investigation of HFI in patients presenting with psychiatric or neurological findings of unknown etiology is of vital importance to prevent possible wrong treatment protocols. Keywords: chronic sinusitis, hyperosteosis frontalis interna, sinus frontalis